제출 #865203

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
865203		vjudge1	Sure Bet (CEOI17_sure)	C++17	0 / 100	1 ms	2396 KiB

sure

// Bolatulu
#include <bits/stdc++.h>

typedef long long ll;
typedef unsigned long long ull;
typedef double db;
#define int long long
#define kanagattandirilmagandiktarinizdan ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
#define pb push_back
#define F first
#define S second
#define md (tl+tr)/2
#define TL v+v,tl,mid
#define TR v+v+1,mid+1,tr

#pragma GCC target( "sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimize("Ofast,unroll-loops,fast-math,O3")

using namespace std;

int binpow(int a,int n,int M) {
    if (n==0)
        return 1;
    if (n%2!=0)
        return (a * binpow(a,n-1,M))%M;
    int z=binpow(a,n/2,M);
    return (z*z)%M;
}

const ll INF = 1e18;
const int N =  1e6+7;
const int M = 1e9+7;
const ll HZ = 1e5;
const int MAX = INT_MAX;
const int MIN = INT_MIN;
const db pi = 3.141592653;
const int P=31;

int n;
db a[N],b[N],ans;

void rec(int pos,db sum1,db sum2,int cnt) {
    if (pos>n) {
        ans = max(ans, min(sum1, sum2) - cnt);
        return;
    }
    rec(pos+1,sum1+a[pos],sum2,cnt+1), rec(pos+1,sum1, sum2+b[pos],cnt+1), rec(pos+1,sum1,sum2,cnt);
}

void solve() {
    cin >> n;
    for (int i=1;i<=n;i++)
        cin >> a[i] >> b[i];
    rec(1,0,0,0);
    cout << fixed << setprecision(5) << ans;
}

signed main() {
    // freopen("lca.in", "r", stdin);
    // freopen("lca.out", "w", stdout);
    kanagattandirilmagandiktarinizdan
    int test = 1, count = 1;
    // cin >> test;
    while (test--) {
        // cout << "Case " << count << ":\n";
        solve();
        if (test)
            // cout << '\n';
            count++;
    }
    return 0;
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 40
• Subtask 3: 0 / 40